/*
 * Copyright 2013-2015 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.cloud.zookeeper.discovery.watcher.presence

import org.apache.curator.x.discovery.ServiceCache
import org.codehaus.groovy.runtime.StackTraceUtils
import spock.lang.Specification

class DefaultDependencyPresenceOnStartupVerifierSpec extends Specification {

	private static final String SERVICE_NAME = 'service01'

	def 'should throw exception if obligatory dependencies are missing'() {
		given:
			DefaultDependencyPresenceOnStartupVerifier dependencyVerifier = new DefaultDependencyPresenceOnStartupVerifier()
			ServiceCache serviceCache = Mock()
			serviceCache.instances >> []
		when:
			dependencyVerifier.verifyDependencyPresence(SERVICE_NAME, serviceCache, true)
		then:
			Throwable thrown = thrown(Throwable)
			StackTraceUtils.extractRootCause(thrown).class == NoInstancesRunningException
	}

}
